(CNN) – A security threat has hit the world’s most popular desktop operating system.
Tuesday, Microsoft warned that Windows 10 users need to update their operating systems immediately.
The tech company said two critical vulnerabilities were discovered.
The issues make the system vulnerable to nasty worms, viruses and malware.
Microsoft warns hundreds of millions of computers are potentially vulnerable to an attack.
The company said a fix is already available for download in its security update guide.
If you update manually, just search “Windows Update” on your computer to access the update tool.
Windows 10 users who have automatic updates should already be protected.
(This story was originally published on August 15, 2019)